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    Wyświetlanie 1-4 z 4
    Tytuł:
    Local effect of progesterone infusion into ovarian artery on activin A and inhibin alpha-subunit secretion during the middle luteal phase in gilts
    Autorzy:
    Wasowska, B
    Stefanczyk-Krzymowska, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/30684.pdf
    Data publikacji:
    2010
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dimeric glycoprotein
    activin
    inhibin
    growth factor-beta
    progesterone infusion
    ovarian artery
    alpha-subunit
    secretion
    exogenous progesterone
    local feedback
    gilt
    middle luteal phase
    Opis:
    The present study was undertaken to elucidate whether an increased, but physiological, amount of progesterone (P4) supplied to the porcine corpus luteum affects luteal secretion of activin A and inhibin a-subunit (Inha) in freely moving gilts. On day 9 of the estrous cycle (EC), both ovarian arteries and both ovarian veins of gilts (n=5) were cannulated. Progesterone was infused into the right ovarian arteries in gilts on days 10, 11 and 12 of the EC at a rate adequate to its physiological retrograde transfer found during the middle luteal phase of the EC. The P4 infusion rate was 0.62 μg/min (day 10), 2x0.62 μg/min (day 11) and 3x0.62 μg/min (day 12). The left ovarian arteries were infused with saline (control). Blood samples were collected from both ovarian veins on days 10-12 of the EC before and after P4 or saline infusion. The mean plasma activin A level in the ovarian vein ipsilateral to the P4-infused ovary was higher (PcO.OOOl) on days 10-12 of the EC than this found in the contralateral ovarian vein. The level of activin A in the ovarian vein ipsilataral to the infusion of P4 was higher on days 11 (PcO.Ol) and 12 (P<0.0001) and tended to be higher (P<0.07) on day 10 of the EC than this in contralateral ovarian vein. The level of Inha in the ovarian vein ipsilateral to the P4-infused ovary on days 10-12 of the EC was not significantly different (P>0.05) than this found in the contralateral ovarian vein. The results of the present study indicate that a local elevation of P4 concentration in blood supplying the ovary during the middle luteal phase of the porcine EC affects ovarian secretion of activin A. The effect of P4 on the secretion of activin A suggested the existence of a short regulatory loop of a positive feedback between P4 being retrogradely transferred into the ovary and the secretion of this peptide.
    Źródło:
    Polish Journal of Veterinary Sciences; 2010, 13, 1; 97-104
    1505-1773
    Pojawia się w:
    Polish Journal of Veterinary Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of short-lasting undernutrition of gilts during peri-conceptional period on biochemical and haematological parameters in blood plasma during peri-implantation period
    Autorzy:
    Franczak, A.
    Zmijewska, A.
    Zglejc, K.
    Dziekonski, M.
    Waszkiewicz, E.
    Okrasa, S.
    Sobotka, W.
    Kotwica, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/1189775.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    undernutrition
    gilt
    biochemical parameter
    hematological parameter
    blood plasma
    early pregnancy
    human nutrition
    mother
    Opis:
    In gilts, the period of early pregnancy occurring from the time of fertilization to the beginning of implantation is sensitive to any environmental disruptions, including an unbalanced diet of a future mother. Previously, we found that due to the undernutrition in gilts during this period, the endocrine intrauterine microenvironment and DNA methylation in the uterus have been changed. These distortions may diminish the success of pregnancy. In this study we focused on the influence of a restricted diet used in gilts during the first days of pregnancy on their biochemical and haematological parameters in peripheral blood. The applied restrictive diet vs. normal diet covered only 70% of the nutritional demands of early pregnant gilts. Normal (n = 4 gilts) or restrictive (n = 5 gilts) diets were used from the day of the first signs of the estrus until day 9 of pregnancy and biochemical and haematological parameters in blood plasma were determined during peri-implantation period, e.g. on days 15 to16 of pregnancy. In restrictive vs. normal fed gilts significantly lower plasma phosphorus, calcium and total cholesterol as well as the tendency to increasing concentrations of triglicerydes and asparate aminotranserase were found. Haematological parameters did not differ between the studied gilts. Thus, it seems that the availability of nutritional factors became suboptimal in restrictively fed early pregnant gilts. Even short-lasting undernutrition of females during the peri-conceptional period may cause a disruption of biochemical homeostasis during the peri-implantation period and probably affect the success of pregnancy.
    Źródło:
    Journal of Elementology; 2016, 21, 1; 33-42
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of short-lasting undernutrition of gilts during peri-conceptional period on biochemical and haematological parameters in blood plasma during peri-implantation period
    Autorzy:
    Franczak, A.
    Zmijewska, A.
    Zglejc, K.
    Dziekonski, M.
    Waszkiewicz, E.
    Okrasa, S.
    Sobotka, W.
    Kotwica, G.
    Powiązania:
    https://bibliotekanauki.pl/articles/14925.pdf
    Data publikacji:
    2016
    Wydawca:
    Uniwersytet Warmińsko-Mazurski w Olsztynie / Polskie Towarzystwo Magnezologiczne im. Prof. Juliana Aleksandrowicza
    Tematy:
    undernutrition
    gilt
    biochemical parameter
    hematological parameter
    blood plasma
    early pregnancy
    human nutrition
    mother
    Opis:
    In gilts, the period of early pregnancy occurring from the time of fertilization to the beginning of implantation is sensitive to any environmental disruptions, including an unbalanced diet of a future mother. Previously, we found that due to the undernutrition in gilts during this period, the endocrine intrauterine microenvironment and DNA methylation in the uterus have been changed. These distortions may diminish the success of pregnancy. In this study we focused on the influence of a restricted diet used in gilts during the first days of pregnancy on their biochemical and haematological parameters in peripheral blood. The applied restrictive diet vs. normal diet covered only 70% of the nutritional demands of early pregnant gilts. Normal (n = 4 gilts) or restrictive (n = 5 gilts) diets were used from the day of the first signs of the estrus until day 9 of pregnancy and biochemical and haematological parameters in blood plasma were determined during peri-implantation period, e.g. on days 15 to16 of pregnancy. In restrictive vs. normal fed gilts significantly lower plasma phosphorus, calcium and total cholesterol as well as the tendency to increasing concentrations of triglicerydes and asparate aminotranserase were found. Haematological parameters did not differ between the studied gilts. Thus, it seems that the availability of nutritional factors became suboptimal in restrictively fed early pregnant gilts. Even short-lasting undernutrition of females during the peri-conceptional period may cause a disruption of biochemical homeostasis during the peri-implantation period and probably affect the success of pregnancy.
    Źródło:
    Journal of Elementology; 2016, 21, 1
    1644-2296
    Pojawia się w:
    Journal of Elementology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Superoxide dismutase and glutathione peroxidase activity in porcine follicular fluid i relation to follicle size, birth status of gilts, ovarian location and year season
    Aktywnosc dyzmutazy ponadtlenkowej i peroksydazy glutationowej w swinskim plynie pecherzykowym w odniesieniu do wielkosci pecherzyka, statusu porodowego loch, polozenia jajnika i pory roku
    Autorzy:
    Lasota, B
    Blaszczyk, B.
    Stankiewicz, T.
    Udala, J.
    Szewczyk, M.
    Matusiak-Bielska, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/45154.pdf
    Data publikacji:
    2009
    Wydawca:
    Zachodniopomorski Uniwersytet Technologiczny w Szczecinie. Wydawnictwo Uczelniane ZUT w Szczecinie
    Tematy:
    pig
    birth status
    oxidative metabolism
    embryo energy production
    reactive oxygen species
    mammal
    oocyte
    embryo
    follicular fluid
    porcine oocyte
    oxidative stress
    glutathione peroxidase
    superoxide dismutase
    porcine follicular fluid
    season
    ovarian location
    gilt
    follicle size
    Źródło:
    Acta Scientiarum Polonorum. Zootechnica; 2009, 08, 1-2; 19-29
    1644-0714
    Pojawia się w:
    Acta Scientiarum Polonorum. Zootechnica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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